If the error is caused by corrupted Windows system files, an SFC scan can repair them.
If you are seeing this error, do not worry. It does not mean your device is broken. Below is a long-form, step-by-step guide to diagnosing and fixing this issue, whether you are using Windows or Mac. 3utools Failed To Access Folder Error Code 13
"Failed to access folder" (Error Code 13) often occurs when 3uTools attempts to backup, restore, or flash an iOS device, usually indicating a permission issue or a file path conflict within Windows. Key Causes: If the error is caused by corrupted Windows
Scroll down to and click Add or remove exclusions . or flash an iOS device